Greetings 'single lovers'!
This might be a asked befor but I can't seem to find it.
What is the reason for the 4.8 degree tilt of the tqwt part of the fh3? Would there be any reason not to go ahead and build a straight version (for a pair of CHR70)?

Greetings 'single lovers'!
This might be a asked befor but I can't seem to find it.
What is the reason for the 4.8 degree tilt of the tqwt part of the fh3? Would there be any reason not to go ahead and build a straight version (for a pair of CHR70)?

aesthetics, mostly, but considering the driver mounting height is approx 32" ( 809mm) it also helps with vertical dispersion

Scott could answer more technically, but I think the answer to the second question is: "yes, there are reasons not to change the geometry & CSA of the second section of the folded path"

FH3 is derived from a hypex horn. If you make the front straight, you change the cross section and horn expansion profile; this will in turn alter the gain & functional BW of the box. The dimensions / shape of FH3 generally pull several duties; the sloping front provides the expansion while also angling the driver up slightly, since for some people the mounting height would otherwise be a little low.